Paint-oil



UNITED STATES PATENT OFFICE.

GEORGE w. BANKER, OF BROOKLYN, NEW YORK.

PAINT-OIL.

SPECIFICATION forming part of Letters Patent No. 474,434, dated May 10,1892.

Application filed March 25, 1891. Serial No. 386,357. (Specimens) To allwhom it may concern;

Be it known that I, GEORGE W. BANKER, a citizen of the United States,and a resident of Brooklyn, in the county of Kings and State of NewYork, have invented a certain new and useful Improvement in Paint-Oils,of which the following is a specification.

My invention relates to an improvement in oils for use in paint and themanufacture of paint. It has been known for a long time that thesemi-drying fish-oils-such, for instance, as the menhaden, the porgy,and like oilsare peculiarlyvaluable for outside paint. They are moredurable and resist the action of the elements better than linseed-oil,which is a vegetable oil. The manufacturers and users of paints,however, are opposed to the use of these fish-oi1s, because of apeculiarly offensive, and by some supposed to be an unhealthful, ordorwhich accompanies its use. This is especially true during the process ofmanhfacture-zl e., the grinding and treatment in the mill.

My invention consists in a treatment of the above-mentioned and othersimilar fish-oils with naphthaline crystals, whereby the objectionablefishy odor is removed and the oil is rendered perfectly inofiensive ifnot pleasant to the smell; also, the crytals add to it measurably,although not to any considerable extent, a drying quality. Thus theamount of drier required is not so great.

I carry out my invention as follows: 1 first take any desired quantityof the said fish oil or oils in their refined and merchantable conditionand, placing the oil in asuitable kettle or tank, 1 heat it to adegreesomewhat less than 212 Fahrenheit. In fact the degree of temperature isnot specially material; but the warmer it is up to about 212 the morereadily the crystals will dissolve. I then add. to the heated oil fromthree to ten per cent. of ordinary commercial naphthaline crystals of agood or medium grade. They are added gradually, and the oil is stirredor agitated meantime. The crystals dissolve readily, especially if theoil is quite hot, so that a few minutes only is necessary. I prefer,however, to continue the stirring operation for some time after thecrystals have apparently dissolved, so as to insure their perfectdissolution and the production of a permanent and homogeneus emulsion.Upon cooling it will be found that the crystals have entirely ormaterially removed the fish odor; depending upon the quality of the oiland the proportion of crystals used. This oil is then to be used as suchoils ordinarily are used in the paint art, suitable driers being used,as is well understood. I am aware that naphthaline has been employed ina paint compound orpaste-like mass composed of oils, paratfine, Japanwax, beeswax, and various other substances as a coating for shipsbottoms, due. I lay no claim to such acompound. Myinvention has relationto the oil as a new article of manufacture.

Having described my invention, I claim As a new article of manufacture,a paintoil composed of a solution of naphthaline in fish-oil,substantially as set forth.

Signed at New York, in the county of New York and State of New York,this 23d day of March, A. D. 1891.

GEO. IV. BANKER.

Witnesses:

PHILLIPS ABBOTT, CHARLES RYDER.

